Home / 20,606.40-30,910.79-7,956.23

Finding the Fourth Proportional to 20,606.40, 30,910.79 and 7,956.23

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Solution

The fourth proportional to 20,606.40, 30,910.79 and 7,956.23 is: 11,934.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,606.40 : 30,910.79 = 7,956.23 : x
  2. Step 2: Convert to fraction form
    20,606.40/30,910.79 = 7,956.23/x
  3. Step 3: Cross multiply
    20,606.40x = 30,910.79 × 7,956.23
  4. Step 4: Simplify right side
    20,606.40x = 245,933,160.39
  5. Step 5: Solve for x
    x = 245,933,160.39/20,606.40
  6. Step 6: Final answer
    x = 11,934.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.